Home / 13,600.12-20,400.90-3,739.18

Finding the Fourth Proportional to 13,600.12, 20,400.90 and 3,739.18

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Solution

The fourth proportional to 13,600.12, 20,400.90 and 3,739.18 is: 5,608.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,600.12 : 20,400.90 = 3,739.18 : x
  2. Step 2: Convert to fraction form
    13,600.12/20,400.90 = 3,739.18/x
  3. Step 3: Cross multiply
    13,600.12x = 20,400.90 × 3,739.18
  4. Step 4: Simplify right side
    13,600.12x = 76,282,637.26
  5. Step 5: Solve for x
    x = 76,282,637.26/13,600.12
  6. Step 6: Final answer
    x = 5,608.97

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.